Lubricator.



F. e. HOBART & c. B. JAHNKE.

LUBRICATOR.

APPLICATION FILED OCT.

Patented Aug. 13, 1918.

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v FRANKLIN e. 1101mm Ann CHARLES B.'1JAH1\TKE, on BELOIT, wIscoNsIm-hssmuons r CHICAGO, ILLINOIS, aoonroanrron or STA ES: WE

T0 FAIRBANKS, nonsn acoluralvY, o

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To all whom??? may' oamn;

Be it known that we, FRANKLIN G. HOBART,

and (Julianne B. JAHNKE, citizens. of the 5 United States; residing at Beloit, in' the county of Rock and State of Wisconsin, have invented ,a certain new. and "useful Im rove, ment in Lubr cators, of wh ch the follow ng is afjspe'cification. 1 a

Our inventlon relatesto lubricators and is intended primarily to be usedinlconnectlon with internal combustion engines, especially 1 The, object those having a closed crankcase. of the invention is to provide simple and effective means, free of valves .orfother moving parts, for lubricating eoacting elements of the engine; for example, the cam mechanism which controls the operation of :the enginei The object is accomplished by the mechanism illustrated in the accompanying drawings, in which:

Figure 1 is a sectional elevation of cam mechanism inclosed within a housing and equipped with a lubricator embodying the invention, the plane of section being indicated by the line 11, Fig. 2.

Fig. 2 is an elevation of the parts shown in Fig. 1 drawn on a decreased scale and showing them in their relation to the crank case of a stationary internal combustion enme. g The cam mechanism shown forms the subject of a co-pending application filed by Franklin G. Hobart on the 8th day of October, 1917, Serial Number 195,254.

Similar numerals refer to similar parts in the two views.

The present invention is not concerned with the specific type of cam mechanism, for it will be understood that the lubricator may be employed to lubricate a variety of co-acting parts. The cam mechanism is therefore used for the sake of illustration only and it is suflicient for the present purpose to say that it consists of a cam 1 mounted upon the engine shaft 2 and actuating. a number of antifriction rollers 3 which produce certain mechanical motions. The parts mentioned are inclosed within a housing 4 which is oiltight, especially at the bottom where it normally contains a supply of lubricating oil, as indicated. 7

A pipe 6 leads from a point inside of the engine crank case. 7 to the bottom of housing a. It then passes up through the housing LUBRICATOR.

Specification ofiLetters Patent, Patented Aug '13, 1918 Application fi1ed 0ctober10,1917. serialize. i

and upto a'point above the levelof the oil therein. The upper end 8 ofpipe 6 is open and points toward the parts to be lubricated. design of these'partsf may be' The particular varied as will be readily understood by those skilled. in the art of machine design, the essential'idea being that the pipe fileads in through the housing so as to make oil-tight connection therewith and to Ijpass upward through the oil "collected at the bottom of the housing.

above the bottom of the housing and below the normal levelof the'lubricating oil. This admits lubricating'oil to the inside pipe, as l i v V .70 In the construction shown, the end of the; V

will be explained.

pipe which is in the inclosed crank case is higher than the level of the lubricating oil, thus avoiding any danger of the oil flowing from the housing back to the crank case of the engine.

The principle of operation is as follows: The crank case is inclosed in the sense that the term is commonly employed in the art. The result is that the engine piston produces pulsations of air in the crank case-usually first a partial vacuum and then a compression. This produces first-a suction and then an air blast in pipe 6. The suction draws a small quantity of lubricating oil through aperture 10 into the pipe and the succeeding impulse or blast forcibly ejects this oil up through the open mouth of the pipe 10 directed toward the parts to be lubricated. There is consequently a constant spitting of oil, so to speak, out through the end of the pipe and this. lubricates not only the parts directly in line with the pipe but also those in the neighborhood, for under ordinary circumstances, the oil will be thrown to the various parts of the housing.

It will be understood that it is not essential'that there be actual suction at any time in pipe 6. It is suflicient'if there areintermittent impulses or blasts of air traveling through the pipe; and it is not essential that the aperture 10 be so small that the oil will not flow throughit'by gravity. Under normal conditions, however, the oil will first be sucked and then forcibly ejected from thepipe by the action of the air, due to the A small aperture .10 is formed in pipe 6 7 Having thus described our invention, what we claim as new and desire to secure by Letters Patent, is:-

L A lubricator having a container for lubricating oil, a pipe leading up through the bottom of the container to a point above the level of the oil, the pipe having an aperture in the side for admitting oil, and meansfor producing an intermittent blast of air upward in said pipe.

2. In a lubricator for an internal combustion engine having a closed crank case, the combination, with said crank case, of a container for oil, said container inclosing the parts to be lubricated, and a pipe leading from said case up through the oil in the corn tainer, the pipe having an opening in' the side for the admission of oil to be ejected through the end of the pipe.

3. In a lubricator for an internal combustion engine having a closed'crank case, the combination, with said crank case, ofa container for oil, said container inclosing the parts to be lubricated, and a pipe leading from said case up through the oil in the container, the pipe having an opening in the side for the admissionof oil to be ejected through the end of the pipe, the end of the pipe which is in the crank case being above the end which is in the container.

i. The combination, with an internal combustion engine having a closed crank case and a piston producing alternately suction and compression in the crank case, of cam mechanism operated by the engine shaft, a housing inclosing said cam mechanism, said housing being adapted to contain fuel oil, a pipe leading from the inside of the crank case to the inside of the housing and passing upward through the lubricating oil in the housing and pointing in the general direction of'the cam mechanism, the upper end of the pipe being open and above the level of the oil, and the pipe having a small hole in the side below the level of the oil whereby a small quantity of oil is firstsucked into the pipe and then forcibly ejected upward in the housing to lubricate the cam mechanism.

In witness whereof we have hereunto subscribed ournames. V

FRANKLIN G. HOBART. CHARLES B. J AHNKE.

Gopleeot this patent may be obtained for five cents each, by addressing the Commissioner of Patents Washington, D. G. 

